Raws li peb txhua tus paub, MBS / NOBS, TMTD, DTDM thiab lwm cov accelerators nyob rau hauv cov tshuaj tiv thaiv intermediate ntawm sulfide yuav decompose nitrosamine carcinogens, yuav ua li cas xaiv kev xaiv? Koj puas xav txais yuav ib qho chaw kho mob zoo rau thaj tsam EU, pom hauv qab no!
Sulfide vulcanization accelerator feem ntau siv los ua cov khoom taj zom yog cov tshuab sulfenamide accelerator thiab thiazole accelerator. Thiazole accelerator non-toxic, tab sis nws cov scorch lub sij hawm luv luv, qhov ceev ntawm vulcanization ntawm cov yam ntxwv ntawm qhov kev txiav txim siab nyob rau hauv lub log ua raws li ib tus accelerator secondary tshwm sim, qhov tseeb nqi tsawg, lub ntsiab daim ntawv thov ntawm accelerator M thiab DM.
Sulfonamide accelerator yooj yim rau cov txheej txheem thiab kev nyab xeeb, ceev curing ceev thiab siab lub cev thiab cov khoom siv dag zog nyob saum toj ntawm lub log tsheb ntau yam accelerator, feem ntau siv lub tshuab fais fab siv nrog MBS / NOBS, TBBS / NS, CBS / CZ, DCBS / DZ.
MBS ua nitrosamines, log manufacturers hauv thaj tsim lub teb chaws thiab cheeb tsam tau nres siv lub tsuj roj, lub tsev tseem siv cov khoom no. Cov nplhaib feem ntau ntxiv ib qho nyiaj thiuram accelerator li ob lub tshuab ua zog, feem ntau siv hom yog tetramethylthiuram disulfide TMTD, cov khoom tsim tau nitrosamines. Ib qho hom uas siv los ntawm leej faj hloov yog dithiodorphorphine DTDM, uas kuj ua cov nitrosamines.
Qhov saum toj no peb hom raw khoom tuaj yeem tsim tau nitrosamines rau cov neeg muaj mob, EU cog lus lub cai REACH tau meej meej hais tias cov khoom xa tuaj rau EU txwv txiav kev siv cov khoom nyhuab saum toj no. Cov nram qab no yog qee qhov muaj lwm txoj hauv kev thaj yeeb zoo rau lwm tus siv rau kev siv:
1 yuav siv tsis txhob TBBS / NS, tab sis yuav tsum tau ntxiv ntau dua scorching tus neeg sawv cev CTP;
2. Siv TBSI, N-tert-butyl-bis (2-benzothiazole) sulfenamide scorch ntawm NOBS thiab DZ, tus nqi qis dua. TBSI cov npe tshuaj Nt-butyl-bis (2-benzothiazole) accelerator, lub npe hu ua TBSI, kuj yog ib lub tshuab sulfenamide. Cov khoom no siv rau hauv cov ntaub ntawv yas kom ntev rau lub sij hawm scorch thiab cov cwj pwm qeeb ceev. TBSI piv nrog TBBS, vim nws lub cev loj ntawm molecular, zoo thermal stability, siab tshaj qhov taw tes dua li TBSS 30 ℃, nrog lub sij hawm ntev scorch, kev kho ceev thiab lwm yam. Tam sim no, TBSS feem ntau siv nrog scorch inhibitor CTP, TBSI tuaj yeem hloov TBBS + CTP ib leeg. Ntxiv nrog rau TBSI kuj muaj dej-ruaj khov thiab yooj yim rau khaws cia; ho ua kom zoo dua qhov qub txeeg qub teg ntawm roj hmab rubber vulcanization reducibility; nyob rau hauv cov roj hmab thiab xaim tsev sib txuas ua ke ua zoo; yuav siv rau tag nrho cov elastomer, tshwj xeeb tshaj yog rau kev sib ntaus tawm tsam txo qhov yuav tsum tau Cov khoom tuab tuab thiab zoo li ntawd.
3. Siv CBS tsis txhob siv, yuav tsis tsim N-nitrosamines accelerator, nws yog sib npaug hloov NOBS, qhov hloov ntawm vulcanization heev. Scorch me ntsis zoo dua kev kawm dua NOBS thiab CZ, vulcanized roj hmab thiab NOBS lub cev muaj zog kuj siv dav hauv nroog log thiab lwm cov khoom roj hmab.
4. Siv tsis tau XT580, N-fatty benzotiazole sulfenamide, nws txoj kev ua tau zoo kiag li NOBS, tab sis kuj tsis yog mob toxic, tus nqi qis dua NOBS.
Accelerator MBS / NOBS:
Accelerator TMTD:
1. Siv TBZTD (tetrabenzylthuram disulfide) siv qhov no, nrog rau kev nyab xeeb dua qub thiab kev rov ua dua; TBZTD lub npe yog tetrabenzylthuram disulfide, uas yog hu ua TBZTD. Cov khoom no yog ib qho tshiab tsim thiuram sai uas yuav hloov tau TMTD (thiuram tetramethyldisulfide) thiab siv tau los ua lub ntsiab accelerator lossis co-accelerator kom sai vulcanization ntawm ntuj roj hmab, nitrile roj hmab thiab styrene-butadiene roj hmab. Kev ua haujlwm yog kev ruaj ntseg thiab muaj lub sijhawm ntev tshaj TMTD. Vim nws lub cev loj uas muaj molecular loj, siab melting point thiab nyuaj decomposition, TBZTD tsis tsim nitrosamines. TBZTD, hauv particular, muaj qhov txo qis me ntsis tshaj TMTD. Nws lwm lub zog muaj zog yuav luag tib yam li ntawm TMTD. Nws kuj yog ib qho kev cia siab thiochlamid Vulcanization accelerator tshiab.
Tus neeg sawv cev Cawm DTDM:
1. DTDC (N, N'-dithio caprolactam) yuav siv tsis tau dawb crystalline daim ntawv, melting point ntawm 120 ~ 122 ℃, tus lej hnyuv loj feem ntau dua 0 19. Nrog nws daim npav hloov dike DTDM, tsis hloov cov mis thiab kev txheem roj hmab. Zoo li tus neeg sawv cev ntawm DTDM, tus sawv cev ntawm DTDC tuaj yeem hloov tag nrho los sis ib feem ntawm cov mis nyuj los ua ib qho zoo los sis ib nrab siv lub nplov qhov nplais. Vim tias tus neeg sawv cev DTDC tuaj yeem tso tawm cov phev tus dej cwj pwm hauv qab lub cev tsis zoo thiab cov ntaub ntawv sulfur monosulfide thiab disulfide bonds ntawm cov roj hmab molecules nrog ntxiv phom, cov qauv roj hmab vulcanization network tuaj yeem ua kom zoo tiv thaiv kom sov thiab ua rau cov ntxhov siab ntau dua. Tus neeg saib xyuas DTDC kuj muaj cov yam ntxwv tsis muaj kev tiv thaiv, ua kom tsis muaj teeb meem, kev ceev ceev, yog lub log tsheb thiab lwm yam khoom siv roj hmab, cov khoom siv hluav taws xob ua kom tsis muaj zog, cov khoom siv roj hmab thiab xim roj hmab, qhov zoo tshaj plaws kev sib kho.
2. Alkyl phenol disulfide (VULTAC-5) siv tsis tau, alkyl phenol disulfide, haum rau nyias qhov sib txawv ntawm cov roj hmab polar thiab dawb sidewall.
3. Siv tsis siv cov polyphaxide polypeptides.